return retryPolicy.shouldRetry(this, attemptNumber);
    }

    /**
     * Get the delay before next retry
     *
     * @param attemptNumber the current attempt number
     * @return delay in milliseconds
     */
    public long getRetryDelayMs(int attemptNumber) {
        return retryPolicy.getDelayMs(attemptNumber);
    }

    /**
     * Add context information
     *

    private TimeoutTask connectionMonitorTask;

    /** Connection timeout in milliseconds */
    protected Integer connectionTimeout;

    /** Maximum total number of connections */
    protected Integer maxTotalConnections;

    /** Maximum connections per route */
    protected Integer maxConnectionsPerRoute;

    /** Socket timeout in milliseconds */
    protected Integer soTimeout;

     *
     * @param request the request to send
     * @param response the response object to populate
     * @param timeout the maximum time to wait for the response in milliseconds
     * @throws IOException if an I/O error occurs during communication
     */
    public synchronized void sendrecv(final Request request, final Response response, long timeout) throws IOException {

   *
   * @param eventClass a class to assert that the returned event is an instance of, or null to
   *     take any event class.
   * @param elapsedMs the time in milliseconds elapsed since the immediately-preceding event, or
   *     -1L to take any duration.
   */
  fun takeEvent(
    eventClass: Class<out CallEvent>? = null,
    elapsedMs: Long = -1L,
  ): CallEvent {

     * one day: 86400000, three days: 259200000, five days: 432000000, one week: 604800000, one year: 31556926000<br>
     * special script :: absolute mode: $(2014/07/10), relative mode: addDay(3).addMonth(4)<br>
     * The milliseconds for (relative or absolute) adjust time (set only when test) @LongType *dynamic in development
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */

     */
    public int getKeyVersion(String sessionId) {
        return keyVersions.getOrDefault(sessionId, 0);
    }

    /**
     * Get key age in milliseconds
     *
     * @param sessionId the session ID
     * @return age in milliseconds, or -1 if unknown
     */
    public long getKeyAge(String sessionId) {
        Long creationTime = keyCreationTimes.get(sessionId);
        if (creationTime == null) {

    /**
     * Gets the maximum age for cached data before requiring refresh
     * @return the maximum cache age in milliseconds
     */
    public long getMaxAge() {
        return maxAge;
    }

    /**
     * Sets the maximum age for cached data
     * @param maxAge the maximum cache age in milliseconds
     */
    public void setMaxAge(long maxAge) {
        this.maxAge = maxAge;
    }

    /**

    @Required
    @Min(value = 1)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer numOfThread;

    /** The interval time between crawl requests in milliseconds (required, 0 to 2147483647). */
    @Required
    @Min(value = 0)
    @Max(value = 2147483647)
    @ValidateTypeFailure
    public Integer intervalTime;

    public static final String DEFAULT_HOURLY_CRON_EXPRESSION = "0 * * * *";

    /** Default interval time in milliseconds for file system crawling. */
    public static final int DEFAULT_INTERVAL_TIME_FOR_FS = 1000;

    /** Default interval time in milliseconds for web crawling. */
    public static final int DEFAULT_INTERVAL_TIME_FOR_WEB = 10000;

import static com.google.common.util.concurrent.MoreExecutors.newDirectExecutorService;
import static com.google.common.util.concurrent.Runnables.doNothing;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.annotations.GwtIncompatible;
import com.google.common.annotations.J2ktIncompatible;
import com.google.common.base.Predicate;